MHT CET202619 April 2026Morning ShiftChemistryChemical KineticsActual

Rate constant of decomposition of hydrogen peroxide is 0.0204 minutes ⁻¹ , calculate half life of reaction.

Options

A17.56 minutes
B33.97 minutes
C51.50 minutes
D68.70 minutes

Correct answer

B. 33.97 minutes

Step-by-step solution

The unit of the rate constant is minutes ⁻¹ , which indicates that the decomposition of hydrogen peroxide is a first-order reaction. For a first-order reaction, the half-life is given by: t_ 1/2 = 0.693 k Substituting the given value of k = 0.0204 minutes ⁻¹ : t_ 1/2 = 0.693 0.0204 t_ 1/2 = 33.97 minutes Answer: 33.97 minutes

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